Electrochemical Characteristics of Iron in H[sub 2]SO[sub 4] Containing Benzotriazole

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Abstract
The effect of benzotriazole on the corrosion of iron in has been studied. The experimental data are consistent with the slow proton discharge step for the hydrogen evolution reaction on iron. No change in mechanism was observed by the addition of benzotriazole, but a significant decrease in the rate of hydrogen evolution was observed. The inhibitor concentration had a significant influence on the behavior of the open‐circuit capacitance. Surface coverages determined from capacitance and corrosion rate data were consistent and found to fit a Langmuir adsorption isotherm.
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